var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var classifysRouter = require('./routes/classifys');
var foodsRouter = require('./routes/foods');
var commentsRouter = require('./routes/comments');

const jwtAuth = require('./util/jwt');

//用于连接数据库
require('./dao/database');

var app = express();

var allowCrossDomain = function (req, res, next) {
    // 设置允许跨域访问的请求源（* 表示接受任意域名的请求）   
    res.header("Access-Control-Allow-Origin", "*");
    // 设置允许跨域访问的请求头
    res.header("Access-Control-Allow-Headers", "X-Requested-With,Origin,Content-Type,Accept,Authorization");
    // 设置允许跨域访问的请求类型
    res.header("Access-Control-Allow-Methods", "PUT,POST,GET,DELETE,OPTIONS");
    // 同意 cookie 发送到服务器（如果要发送cookie，Access-Control-Allow-Origin 不能设置为星号）
    res.header('Access-Control-Allow-Credentials', 'true');
    next();
};
app.use(allowCrossDomain);

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

// app.use(jwtAuth);

app.use('/', indexRouter);
app.use('/users', usersRouter);
app.use('/classifys', classifysRouter);
app.use('/foods', foodsRouter);
app.use('/comments', commentsRouter);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
    next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
    // set locals, only providing error in development
    res.locals.message = err.message;
    res.locals.error = req.app.get('env') === 'development' ? err : {};

    // render the error page
    res.status(err.status || 500);
    res.render('error');
});


app.listen(3000, () => { console.log('3000端口启动成功'); });
// module.exports = app;
